package com.example.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * The type Payment service.
 */
@Service
public class PaymentService {

    public String paymentInfo_OK(Integer id) {

        return "线程 = " + Thread.currentThread().getName() + "\npaymentInfo_OK\nid = " + id + "\nヾ(≧▽≦*)o";
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeoutHandler", commandProperties = {@HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "6000")})
    public String paymentInfo_timeout(Integer id) {

        int sleepTime = 3;
//        int i = 1 / 0;
        try {
            TimeUnit.SECONDS.sleep(sleepTime);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程 = " + Thread.currentThread().getName() + "\npaymentInfo_timeout,\nid = " + id + "\nヾ(≧▽≦*)o";
    }

    public String paymentInfo_TimeoutHandler(Integer id) {

        return "线程 = " + Thread.currentThread().getName() + "\npaymentInfo_timeout\nid = " + id + "\n服务降级(┬┬﹏┬┬)";

    }

    /**
     * 服务熔断
     *
     * @param id the id
     * @return the string
     */
    @HystrixCommand(
            fallbackMethod =
                    "paymentCircuitBreaker_fallback",
            commandProperties = {
                    @HystrixProperty(
                            name = "circuitBreaker.enabled",
                            value = "true"), // 是否开启断路器
                    @HystrixProperty(
                            name = "circuitBreaker.requestVolumeThreshold",
                            value = "10"), // 请求次数
                    @HystrixProperty(
                            name = "circuitBreaker.sleepWindowInMilliseconds",
                            value = "10000"), // 时间窗口期
                    @HystrixProperty(
                            name = "circuitBreaker.errorThresholdPercentage",
                            value = "60")}) // 跳闸的失败率阈值
    public String paymentCircuitBreaker(@PathVariable("id") Integer id) {

        if (id < 0) {
            throw new RuntimeException("***id不能为负数***");
        }
        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName() + "\t" + "调用成功，流水号 = " + serialNumber;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id) {

        return "断路器工作，id不能为负数，请稍后再试 id = " + id + " " + IdUtil.simpleUUID();
    }

}
